Abstract
The magnetic properties and magnetic anisotropy of the Er2(Fe1−xVx)17 compounds (with x = 0–0.05) have been studied. The Curie temperature (TC) of the compounds has been found to increase as the vanadium concentration increases. It has been shown that the Er2(Fe1 − xVx)17 compounds have the easy-plane anisotropy in the temperature range from, 77 K to TC. Magnetization curves have been measured and the temperature dependences of the K1 and K2 anisotropy constants have been calculated. Contributions from the Er and Fe magnetic sublattices to the magnetic anisotropy constants were distinguished. An analysis of the obtained data allowed us to conclude that the cause for the existence of first-order magnetization processes in Er2Fe17 at low temperatures is a positive contribution from the Er sublattice to K1 and a negative contribution from it to K2.
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